Mary Lou Wiedmaier, 64, of Warren, passed away Tuesday, December 2, 2025, at Saint Vincent Hospital, Erie. Mary Lou was born November 22, 1961, in Warren, the daughter of the late George R. and Georgianne E. (Payne) Wiedmaier Sr. When she was younger she worked at Whirley Industries for a few years. Mary Lou loved spending time with her family, bowling, swimming, board games, watching tv shows, and was involved in the Special Olympics. Mary Lou is survived by her brother, George R. Wiedmaier Jr of Warren, and sister, Linda Scott of Warren. In addition to her parents, Mary Lou was preceded in death by her brother, David A. Wiedmaier. Friends will be received at Peterson-Blick Funeral Home Inc., 1003 Penna. Ave. East, Warren, PA, on Friday, December 12, 2025, from 2:00pm to 3:00pm, at which time a Memorial service will be held with Deacon Ray Wiehagen, Holy Redeemer R.C. Church, officiating. Memorial contributions for Mary Lou may be made to Special Olympics, P.O. Box 8054, Erie, PA, 16505. Those wishing to send online condolences may do so by visiting www.petersonblickfuneralhome.com or to our Facebook page.